Spyware doctor, Zlob-Media Codec infections, W32.Sober.X, Homepage hijack, Virus Alert, XP Antivirus 2008, Vista Antivirus 2008, or Antivirus XP 2008, are examples of counterfeit antispyware that devastates the world wide web.

These applications usually come up after you installed a video codec or software patch that come with Trojan, malware and virus.

Programs of this type normally generates fake and misleading system popup error messages so end-users will be tricked into purchasing the application. Replacing desktop wallpaper, hijacking browsers and blocking access to system resources such as the control panel.